[wp-trac] [WordPress Trac] #43619: Introduce new PHP cross-version compat function `is_iterable()`

[WordPress Trac]

#43619: Introduce new PHP cross-version compat function `is_iterable()`
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 Reporter:  jrf          |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  General      |     Version:  trunk
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:
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Comment (by schlessera):

 Related to this & #43583:
 Considering the growing need to add PHP polyfills and other compat code to
 Core (due to the fact that PHP has a higher velocity than WordPress), we
 should look into using a more systematic approach to compatibility code
 come 5.0, like described in #42264

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Ticket URL: <https://core.trac.wordpress.org/ticket/43619#comment:1>
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